chore(package): update nwb to version 0.23.0

Closes #11

Author: greenkeeper[bot]

package.json

@@ -55,7 +55,7 @@
     "babel-eslint": "^8.0.0",
     "eslint": "^4.7.2",
     "eslint-plugin-react": "^7.3.0",
-    "nwb": "^0.21.1",
+    "nwb": "^0.23.0",
     "prettier": "^1.7.0",
     "react": "^16.0.0",
     "react-dom": "^16.0.0"